I am the protagonist

"Next, I want to conduct research on other magic with Caster."

Medea hugged Shirou with delight.

"Ok!"

Chapter 107 The drawback of the elixir of immortality is... its taste.

"Rin, Sakura, come here for a moment."

Shirou brought Medea to the living room.

Rin and Sakura, who were already in the living room, exchanged a glance and came to Shirou's side.

They saw Shirou give each of them a flask filled with a strange green liquid.

"Shirou, this is... an alchemical potion?"

Although the liquid inside the flask was strange, Rin still sensed an astonishing magical fluctuation within it.

Saber and Rider, who were standing nearby, also came over.

"Yes."

"This is the culmination of four months of hard work by Caster and me—the elixir of immortality."

"This alchemical potion can make people live forever, but it requires a lot of materials to make and a large amount of dragon blood. The result is only immortality and eternal life, so the cost-effectiveness is a bit low."

Immortality is not the same as eternal life.

Longevity has a lifespan, but immortality does not have the concept of a lifespan.

It can be said that the alchemical potion Shirou created still could not achieve immortality.

It can only be said that Shirou compromised on the issue of immortality at this stage, and temporarily used longevity to alleviate the pressure of time.

"Is the price-performance ratio too low?"

"Yes, the elixir of immortality is actually the same as the elixir of eternal life, but neither of them is very cost-effective."

"Longevity is not immortality. Longevity is still limited by time, but immortality is free from the limitations of time."

"To live forever, to be immortal, is to have eternal life."

"Because the materials consumed are very large, and it is impossible to obtain rare things like dragon blood in modern times, the cost-effectiveness of creating such an immortality item is really low."

"However, I am not yet able to create an elixir of immortality, so I can only use an elixir of longevity as a substitute."

Shirou is not yet able to create the elixir of immortality.

The ingredients required for that kind of medicine must be even more demanding, not to mention that Shirou doesn't even know the formula for the immortality drug yet.

All I can say is that it's not something Shirou can easily reach right now.

So now Shirou is only placing his hopes on the future, believing that he has enough resources to create the elixir of immortality.

"I see."

"Then, do I just need to drink it?"

"Shirou, is there anything else I should be careful about?"

Shirou carefully considered the points to note regarding this elixir of immortality.

"Actually, there's nothing particularly noteworthy."

"This elixir of immortality is designed to maintain the user's bodily functions at their most perfect stage. In other words, once the body reaches its peak growth after drinking this elixir, it will be fixed."

"It can not only ensure the perfection of the skin, but also has a certain strengthening effect on the body."

"Basically, there are no major flaws, except that immortality has a time limit, everything else is perfect."

Rin was relieved; she still trusted Shirou completely.

But at this moment, Shirou suddenly thought of a problem that wasn't exactly related to the medicinal properties.

"Actually, if I had to say something, this alchemical potion is quite perfect."

"However, because all the perfection is combined in the manifestation of medicinal properties, the taste is absolutely devastating."

"Although I haven't tried it before, I'm sure it's a taste that can temporarily make you lose your sense of taste."

However, this issue was never within Shirou's considerations from the beginning.

After all, alchemical potions are just medicine.

What medicine tastes better than this? Especially an elixir of immortality. Should we consider the taste of a medicine when considering its efficacy?

Therefore, Shirou was absolutely certain that it was a devastating flavor.

Just one bite is enough to make you want to vomit.

"Whoo~"

"If it's just the taste, then it's fine."

If the only issue you're noticing is the taste, then Rin is fine.

From the moment Rin saw that green liquid, she didn't think it would taste good; it tasted like fruit juice.

"Yes, no problem at all."

Sakura doesn't think the taste is a problem either.

Sakura had drunk alchemical potions before, and they all tasted strange and were never particularly delicious.

"Since you've already made preparations, then there's no problem."

"Saber, Rider, you two take control of Rin and Sakura's bodies first."

"Drinking that stuff will cause a very obvious physical resistance reaction. We need to control them and prevent them from resisting before they drink it all."

Just in case, Shirou decided to have Saber and Rider control Rin and Sakura's bodies first.

This situation gave Rin and Sakura a very bad feeling.

"Shirou, are you really alright?"

"Senior... was the reaction really that obvious?"

"Don't worry, the reaction I'm referring to isn't the reaction caused by the alchemical potion directly affecting your bodies."

"What I'm saying is that the smell of that alchemical potion might cause your bodies to have an instinctive resistance, so Saber and Rider need to control your bodies."

"After all, the effects of that alchemical potion will be reduced if you don't drink the whole thing."

As he spoke, Shirou pulled Caster back a few steps.

Rin and Sakura both started to panic when they saw this.

What kind of flavor could elicit such a reaction from Shirou?

The two sisters didn't have any better options right now, since the elixir of immortality was made for them to drink, and even if it tasted terrible, they had no choice but to force themselves to drink it.

Open the cork of the bottle.

"vomit!!!"

Rin and Sakura's expressions changed as soon as they smelled the odor, and they immediately started gagging.

The taste was beyond terrible.

Even Saber and Rider's expressions turned extremely unpleasant when they smelled that scent.

No wonder Shirou said Rin and Sakura's bodies reacted to this scent.

This... this can't even be described as taste anymore.

Even a long-dead, stinking rat from the sewer smells better than this.

The thought that Rin and Sakura would soon be drinking this flavor sent a chill down Saber's spine.

In a sense, this is really too much of a hassle.

"Rin, Sakura, you need to drink this as soon as possible."

"Once this medicine is opened, it must be drunk within thirty seconds, otherwise the medicinal properties will begin to evaporate."

"!?"

Rin and Sakura both rejected this disgusting stuff.

But now, in order to achieve immortality, they have no choice but to drink this disgusting stuff.

The two exchanged a glance, closed their eyes, and gulped it down.

In less than twenty seconds, the liquid in the flask was completely drunk.

"Oh!"

But after achieving their goal, both Rin and Sakura rolled their eyes and collapsed to the ground.

Chapter 108 The Price is a Week of Disgust

"...It's really disgusting."

The pungent smell was so strong it almost hurt my eyes.

Saber felt she needed to breathe some fresh air to make the smell disappear from her mind.

Medea shook her head helplessly.

"Although the cost-effectiveness is not good, this is one of the reasons why the longevity drug is not popular."

"And another reason is the taste of this stuff... it's really hard for people to drink."

Think about how she and Shirou had to make medicine in a very enclosed environment, just to avoid the smell of the alchemical potion getting on them.

Once you get that smell, it can take a lot of effort to remove it.

It's like drinking that disgusting stuff... and you'll smell like that for at least a week.

Shirou actually knew about the problem with the elixir of immortality through that large amount of information, but apart from that problem, there would be no other problems with the elixir of immortality, and he could guarantee that.

"The taste is a major flaw, but its medicinal properties as an elixir of immortality are absolutely acceptable."

"It's not hard to understand why someone would only maintain this state for a week in order to achieve immortality."

After all, it's just a matter of sacrificing your taste buds for a week.

It's not a permanent sacrifice of one's sense of taste.

The fact that sacrificing just one week can grant immortality is already quite a bargain.

After all, people in this era are already risking their lives to achieve immortality.

There aren't many immortal species in this era; the most numerous and easiest to become are actually just Dead Apostles.

Dead Apostles are the most common type of undead in the world.

It is also the type of immortal that is most likely to be hunted down.

In the entire world, only the Dead Apostles dare to openly cause trouble. If any other undead dare to frequently cause trouble, they will all be hunted down by the Holy Church.

Therefore, in order to achieve immortality, he only sacrificed his sense of taste for one week.

This really isn't a very high price to pay.

"Shirou, will Rin and Sakura be alright?"

"There won't be any major negative reactions."

"They are fainting now because the strong taste stimulation of the drug causes them to faint temporarily. They will wake up on their own after resting for a while."

Shirou was already aware of this phenomenon.

The drug's impact on the sense of taste was so great that this reaction is quite normal.

The key lies in what comes next.

It's relatively normal to feel disgusted at first, but the disgust that follows is the bigger problem.

"Rin and Sakura will probably be in this disgusting state for the next week."

“Excessively stimulating drugs can temporarily cause them some psychological trauma.”

"There's no other way; some compromises are necessary in the pursuit of immortality."

Shirou's words made a lot of sense; it only made me feel nauseous for a week.